Gait between a walk and a canter (4)
I believe the answer is:
trot
'gait between a walk and a canter' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for trot that I've seen before include "Horse's gait - extreme leftist" , "Hurry along" , "Jog along" , "Move at brisk pace" , "Run at moderate pace" .)